<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" src="../js/jquery-3.3.1.min.js"></script>
</head>
<body>
<ul>
    <li id="bj"name="shanghai"></li>
    <li id="tj"></li>
    <li id="cq"></li>
</ul> 
</body>
</html>